Meet Our Staff

Mariann Zenitz, Executive Director

As Executive Director, Mariann leads a strong management team at Susan Bailis. She has worked with the senior population most of her career. Born in Massachusetts, she studied psychology and marketing and has worked in assisted living since 2004.

Mariann has a strong background in business operations, marketing, and sales. Among her accomplishments she has won numerous awards for excellence in service and hospitality.

Mariann lives north of Boston.

Marcos Stadler, Assistant Executive Director

As Assistant Executive Director, Marcos supports the Executive Director with the daily operations of Susan Bailis.  Marcos has a Liberal Arts degree in Healthcare Administration and a background in healthcare operations with the knowledge of local, state, and federal regulations.

Marcos has been working in assisted living and skilled nursing since 1992, helping to make a difference in the lives of senior citizens, their families, and friends. His priority is to ensure all residents are happy and proud of living in our community.

Diane DeRubeis, RN, BSN, MBA, S-RCD, Resident Care Director

Diane was born and raised in Pennsylvania. She attended Northeastern University, where she earned her Bachelor of Science degree in Nursing. She later earned her Master’s in Business Administration from UMass Boston.

For many years, Diane worked as a nurse and supervisor at the Boston VNA and as Community Relations and Development Director at the Medford VNA.

In 2007, she began her career in assisted living as a Resident Care Director. Over the past five years, Diane has served with distinction in that same leadership capacity here at Susan Bailis. As testament to her professionalism and skills set, Diane also serves as Senior Resident Care Director for all HallKeen Assisted Living’s properties in the eastern Massachusetts region.

Fiona Hanrahan, Activity Director

According to the dictionary, the word “activity” can be defined as: the quality or state of being active or vigorous or energetic action. Not only does Fiona endeavor to keep residents engaged, but she strives to create meaningful programs to illuminate their days. As our Activities Director, Fiona’s main focus is to keep our residents engaged, excited, and involved. She strives to create new meaningful programs that are intellectual, inviting and inclusive.

Fiona’s monthly activity calendar encompasses spiritual, physical, crafts through creativity, cultural, social, and musical events and activities. At Susan Bailis, activities are so much more than mere board games or arts and crafts. They are unique moments throughout the day that evoke giggles, smiles and emotion to create new memories. Susan Bailis is not simply a name on a building. It is a cozy community of caring hearts and souls where friendships are built and the patterns of everyday life glisten.

Fiona holds a Bachelor of Arts degree in Studio Art and a minor in Theatre from Hunter College. Fiona loves to illustrate and write whimsical fairy tales, paint, take photographs, bake and dream about lighthouses and mermaids. Fiona is a native of New York. She moved to Boston after graduating. Boston and Susan Bailis Assisted Living are now home to Fiona.

Fiona’s monthly activity calendar encompasses spiritual, physical, crafts through creativity, cultural, social, and musical events and activities. At Susan Bailis, activities are so much more than mere board games or arts and crafts. They are unique moments throughout the day that evoke giggles, smiles and emotion to create new memories. Susan Bailis is not simply a name on a building. It is a cozy community of caring hearts and souls where friendships are built and the patterns of everyday life glisten.

Doug Warren, Community Relations Director

Serving the assisted living industry since 2003, Doug brings a lifetime passion for hospitality, customer service and helping others to the Susan Bailis mission.  He joined our team in September of 2015 with a wealth of experience gained with established assisted living communities on the north shore, as well as with the successful openings of several new assisted living communities in the metropolitan Boston area.

Doug found his professional calling while helping his family research and select the perfect assisted living community for his grandmother. He holds an MBA degree and, prior to transitioning into the assisted living field, spent more than 15 years in marketing and advertising. He also comes with a strong background in consumer behavior and psychology.

Born in Massachusetts, he spent many years in California and currently resides north of Boston.  He enjoys sports and as testimony to his love for traveling, he has visited 49 of our 50 states. Alaska is last on his list.

Norris Derby, Maintenance Director

Susan Bailis is renowned for delivering on their promise of providing a better life and peace of mindderived primarily from staff that provide “exceptional personalized services. Since its inception over 15 years ago, this facility has been synonymous with wowing our residents and their families with the amazing warmth and charm of the Susan Bailis community. Another hallmark of this community is having a tradition of providing a welcoming, relaxing, modern, safe and efficiently running facility so that our residents, their family and our staff feel right at home on our premises.

With all the foregoing attributes, it is no surprise that our Maintenance Director Norris is a perfect fit for Susan Bailis. Norris embodies all these fine characteristics and more and he enthusiastically displays these as he undertakes his functions in ensuring our property is safe and functional for all concerned. 

Norris is affectionately called ‘Macgyver by his childhood friends in reference to the 1980’s television series due to his innate ability to repair anything mechanical. He approaches his duties as Maintenance Director with the same technical assurance, quietly confident, amazingly polite and always quick to offer a heart warming smile. 

He brings an excess of 12 years of maintenance experience to Susan Bailis and proactively provides the highest level of service to the community. Norris migrated to the U.S. in 2015 from his native Jamaica after graduating from the prestigious Kingston College and undertaking graduate studies at the University of the West Indies School of Continuing Studies. 

He has held a number of management positions with different companies in Jamaica including Novelty Trading Company and Dryclean (USA) Jamaica where his last position was Manager of Plant Operations and Maintenance prior to transitioning to the U.S. Since moving to the States, Norris has worked with the Elderly at Waterstone in Wellesley and Providence House in Brighton. 

Away from work, Norris enjoys spending time with his family, watching movies, fishing, traveling and working on automobiles.